Key retaining padlocks prevent the key from being removed until the padlock is fully closed. Reinforced laminated steel withstands severe physical abuse while hardened steel shackle resists tampering. Body plates individually coated for superior rust protection. 5-pin cylinder offers more unique key cuts for better tamper resistance. Each padlock is keyed differently with keys precision machined to exacting standards, meaning that the key for one lock should not open another.